exoskeleton vs invertebrate

exoskeleton and invertebrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
exoskeleton	Yes	No	No	No
invertebrate	Yes	Yes	No	No

exoskeleton (noun)	invertebrate (noun)
the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs	any animal lacking a backbone or notochord; the term is not used as a scientific classification

exoskeleton (adjective)	invertebrate (adjective)
	lacking a backbone or spinal column